CN213232997U - Road bed filling structure - Google Patents

Road bed filling structure Download PDF

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CN213232997U
CN213232997U CN202021890015.7U CN202021890015U CN213232997U CN 213232997 U CN213232997 U CN 213232997U CN 202021890015 U CN202021890015 U CN 202021890015U CN 213232997 U CN213232997 U CN 213232997U
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layer
fixedly connected
road bed
cement
filling structure
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CN202021890015.7U
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张涛
郑嘉
廖凇
张泽坤
房强
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Abstract

The utility model relates to a road bed construction technical field specifically discloses a road bed filling structure, including road bed base member and rubble soil layer, the top fixedly connected with geogrid of road bed base member, and the left and right sides fixedly connected with curb of geogrid. This road subgrade filling structure, compare with current ordinary subgrade filling structure, lime soil layer has better hydraulicity, the metalling is stabilized to cement has better water permeability, when water permeates to lime soil layer through the metalling is stabilized to cement, thereby can form the crystallisate in the lime soil layer and increased the intensity of self, and stabilize the metalling with slay road bed and cement and form wholly, make whole structure more firm, adopt slay road bed can solve ground intensity, the problem that the settlement volume is big, can also fully carry out the waste utilization of slay, reduce the engineering budget, adopt the gutter can collect and get rid of a small amount of surface water of flow direction subgrade within range, make the subgrade base member be difficult for making intensity decline because of soaking.

Description

Road bed filling structure
Technical Field
The utility model relates to a road bed construction technical field specifically is a road bed filling structure.
Background
The roadbed is a structure formed by filling or excavation and directly supporting a road surface, and is also called a line substructure. In a road, the quality of the roadbed determines the bearing capacity and service life of the road, and also determines the condition of subsequent maintenance and repair of the road.
In the prior art, asphalt concrete layer is laid on the topmost layer of the roadbed usually, set up cement stabilization gravel layer below asphalt concrete layer, cement stabilization gravel layer has higher intensity, impermeability and frost resistance are better, but in rainy weather, rainwater infiltration asphalt concrete layer arrives at cement stabilization gravel layer, because cement stabilization gravel layer impermeability is better makes the unable in time discharge of ponding between cement stabilization gravel layer and the asphalt concrete layer, ponding can cause the erosion to asphalt concrete layer, harm asphalt concrete layer, the life of asphalt concrete layer has been reduced, and not be equipped with the phenomenon that the heat preservation lime layer easily receives the influence of temperature and produces expend with heat and contract with cold, certain deflection has been increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a road bed filling structure to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a road subgrade filling structure comprises a subgrade base body and a rubble soil layer, wherein a geogrid is fixedly connected above the subgrade base body, the left side and the right side of the geogrid are fixedly connected with road shoulders, the left side and the right side of each road shoulder are fixedly connected with anti-scouring cement layers, the left side and the right side of each anti-scouring cement layer are fixedly connected with side ditches, a slag layer is fixedly connected above the rubble soil layer, the rubble soil layer is positioned above the geogrid, a lime soil layer is fixedly connected above the slag layer, a heat preservation layer is fixedly connected above the lime soil layer, a cement stabilizing rubble layer is fixedly connected above the heat preservation layer, a horizontal drainage layer is fixedly connected above the cement stabilizing rubble layer, water outlet pipes are fixedly connected at the left side and the right side of the horizontal drainage layer, a reinforcing steel bar reinforcing layer is fixedly connected above the horizontal drainage layer, and an asphalt concrete layer is fixedly connected above the reinforcing steel bar reinforced layer.
Preferably, the upper surface of the roadbed base body is tightly attached to the lower surface of the geogrid, and the central axis of the roadbed base body coincides with the central axis of the anti-scouring cement layer.
Preferably, the upper surface of rubble soil layer and the lower surface on slag layer closely laminate, and coincide between the axis on rubble soil layer and the axis on slag layer mutually.
Preferably, the side ditches are symmetrical about the central axis of the heat-insulating layer, and the lower surface of the cement stabilized gravel layer is tightly attached to the upper surface of the heat-insulating layer.
Preferably, closely laminate between the lower surface on horizontal drainage layer and the upper surface on the rubble layer is stabilized to cement, and symmetrical between the axis about horizontal drainage layer between the outlet pipe.
Preferably, closely laminate between the lower surface on bituminous concrete layer and the upper surface of steel reinforcement layer, and the diversion groove is the equidistance form and installs in the inside of steel reinforcement layer.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. through the roadbed base member, geogrid, the scour prevention cement layer, the setting on curb and rubble soil layer, make at first mat formation the bottommost when filling out the roadbed level, secondly lay geogrid in ground level back, and lay the scour prevention cement layer fixedly, later pave rubble soil layer again, geogrid can make mountain ground rubble soil layer form firm plane rather than when laying, improve the bearing load of roadbed base member, alleviate the road surface and fill out the degree that the roadbed base member takes place inhomogeneous settlement after the road surface is filled, the vertical arch that makes progress in middle part on roadbed base member surface and form the horizontal slope of four percent with ground, this makes the rainwater can discharge to the both sides of roadbed base member along the slope direction rapidly after the infiltration roadbed base member, avoid the rainwater to persist the time overlength in the roadbed base member, make the roadbed base member receive the infringement because of rainwater soaking for a long time.
2. The slag layer and the lime soil layer are sequentially paved after the gravel soil layer is paved through the arrangement of the side ditch, the slag layer, the lime soil layer, the heat preservation layer and the cement stabilized gravel layer, and the slag layer and the lime soil layer have the advantages that the chemical components of slag have better activity, the dead weight is lighter, the distribution of aggregate particle size is good, the compaction characteristic is good, the density is lower than that of natural stone, the optimal water content is higher than that of common roadbed materials, and the like, after the slag layer is paved, the problems of low strength and large sedimentation amount of a soft soil foundation can be solved, resources can be fully utilized, simultaneously, the land occupation generated by slag waste can be reduced, the disposal cost is reduced, the lime soil layer has better hydraulicity, the cement stabilized gravel layer has better water permeability, when water penetrates to the lime soil layer through the cement stabilized gravel layer, crystals can be formed in the lime soil layer, so that the strength of the lime soil layer is increased, and the lime, the whole structure is more stable, the phenomenon of expansion with heat and contraction with cold can occur when the lime soil layer is affected by temperature, and the heat preservation layer can ensure that the temperature of the lime soil layer is not easy to change greatly.
3. A horizontal drainage layer, a water outlet pipe, a reinforcing steel bar layer, a water diversion groove and an asphalt concrete layer, so that the horizontal drainage layer is connected with the water outlet pipe, rainwater permeated by the asphalt concrete layer enters the water guide groove on the rear layer inside the reinforced steel bar layer and flows down and enters the horizontal drainage layer to flow out of the water outlet pipe, drainage is realized, the deformation of the pavement caused by excessive water accumulation on the roadbed is avoided, the service life of the reinforced steel bar layer is shortened, the bearing capacity of the upper part of the pavement is enhanced by the reinforced steel bar layer, and the stability in use is improved, the use quality is improved, the asphalt concrete material has higher bonding strength, a compact and stable road surface can be formed, the asphalt concrete material has proper roughness, and can be well rubbed with vehicles when being laid into the asphalt concrete layer, so that the driving is safer.
Drawings
Fig. 1 is a schematic front view of the present invention;
fig. 2 is a schematic side view of the present invention;
fig. 3 is a schematic top view of the present invention.
In the figure: 1. a roadbed matrix; 2. a geogrid; 3. an anti-scour cement layer; 4. a road shoulder; 5. a gravel soil layer; 6. side ditches; 7. a slag layer; 8. a lime soil layer; 9. a heat-insulating layer; 10. a cement stabilized rubble layer; 11. a horizontal drainage layer; 12. a water outlet pipe; 13. reinforcing steel bar layers; 14. a water diversion groove; 15. an asphalt concrete layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a road subgrade filling structure comprises a subgrade base body 1 and gravel layers 5, wherein a geogrid 2 is fixedly connected above the subgrade base body 1, the left side and the right side of the geogrid 2 are fixedly connected with road shoulders 4, the left side and the right side of the road shoulders 4 are fixedly connected with anti-scouring cement layers 3, the left side and the right side of the anti-scouring cement layers 3 are fixedly connected with side ditches 6, the upper surface of the subgrade base body 1 is tightly attached to the lower surface of the geogrid 2, the central axis of the subgrade base body 1 is coincident with the central axis of the anti-scouring cement layers 3, when the subgrade is filled, the bottommost layer is firstly paved and leveled, the geogrid 2 is paved on the ground and leveled, the anti-scouring cement layers 3 are paved and fixed, then the gravel layers 5 are paved, the geogrid 2 can enable the gravel layers 5 to form a stable plane with the gravel layers when being paved, and the, the degree of uneven settlement of the roadbed matrix 1 after pavement filling is reduced, the middle part of the surface of the roadbed matrix 1 protrudes vertically upwards and forms a transverse gradient of four percent with the ground, so that rainwater can be quickly drained to two sides of the roadbed matrix 1 along the gradient direction after permeating into the roadbed matrix 1, the rainwater is prevented from remaining in the roadbed matrix 1 for too long time, and the roadbed matrix 1 is damaged due to rainwater soaking for a long time;
as shown in fig. 1 and 2, a slag layer 7 is fixedly connected above a gravel soil layer 5, the gravel soil layer 5 is positioned above a geogrid 2, the upper surface of the gravel soil layer 5 is tightly attached to the lower surface of the slag layer 7, and the central axis of the gravel soil layer 5 coincides with the central axis of the slag layer 7. due to the advantages that the slag chemical components have better activity, the self weight is lighter, the aggregate particle size distribution is good, the compaction characteristic is good, the density is lower than that of natural stones, the optimal water content is higher than that of common roadbed materials and the like, the problems of low strength and large sedimentation amount of a soft soil foundation can be solved after the slag layer 7 is laid, resources can be fully utilized, meanwhile, the land occupation caused by waste slag can be reduced, and the disposal cost can be reduced;
as shown in fig. 2 and 3, the upper fixedly connected with lime soil layer 8 of the slag layer 7, and the upper fixedly connected with heat preservation layer 9 of the lime soil layer 8, it is symmetrical between the axis about heat preservation layer 9 between the side ditch 6, and closely laminate between the lower surface of cement stabilized gravel layer 10 and the upper surface of heat preservation layer 9, lime soil layer 8 has better hydraulicity, cement stabilized gravel layer 10 has better water permeability, when water permeates to lime soil layer 8 through cement stabilized gravel layer 10, thereby can form the crystal in the lime soil layer 8 and increase self intensity, and form wholly with slag layer 7 and cement stabilized gravel layer 10, make the whole structure more firm, lime soil layer 8 receives the phenomenon that the temperature influence can take place heat and cold shrinkage, heat preservation layer 9 can make the temperature of lime soil layer 8 difficult to take place great change.
As shown in fig. 1 and 3, a cement stabilized gravel layer 10 is fixedly connected above the heat preservation layer 9, a horizontal drainage layer 11 is fixedly connected above the cement stabilized gravel layer 10, water outlet pipes 12 are fixedly connected on the left and right sides of the horizontal drainage layer 11, a reinforcing steel bar reinforcing layer 13 is fixedly connected above the horizontal drainage layer 11, a water diversion groove 14 is formed in the reinforcing steel bar reinforcing layer 13, an asphalt concrete layer 15 is fixedly connected above the reinforcing steel bar reinforcing layer 13, the lower surface of the horizontal drainage layer 11 is tightly attached to the upper surface of the cement stabilized gravel layer 10, the water outlet pipes 12 are symmetrical with respect to the central axis of the horizontal drainage layer 11, the lower surface of the asphalt concrete layer 15 is tightly attached to the upper surface of the reinforcing steel bar reinforcing layer 13, the water diversion grooves 14 are equidistantly arranged in the reinforcing steel bar reinforcing layer 13, and the horizontal drainage layer 11 is connected with the water outlet pipes, the rainwater that asphalt concrete layer 15 permeates gets into inside later floor flume 14 of steel reinforcement layer 13 and flows down and gets into horizontal drainage layer 11 and flow out from outlet pipe 12, realize the drainage, avoid the too much road surface deformation that causes of road bed ponding, shorten its life, steel reinforcement layer 13 has strengthened the bearing capacity on this road surface upper portion, stability when having improved the use, and service quality has been improved, higher cohesive strength has in asphalt concrete material, can form closely knit, stable road surface, and temperature stability is better, make asphalt concrete layer 15 be difficult for taking place the fracture, asphalt concrete material still has suitable roughness, can have better friction with the vehicle when laying into asphalt concrete layer 15, make the driving more safe.
The working principle is as follows: when the roadbed filling structure is used, firstly, when the roadbed filling structure is used, in rainy weather, rainwater permeates the asphalt concrete layer 15 and reaches the reinforced steel bar reinforcement layer 13, the rainwater enters the horizontal drainage layer 11 through the water diversion groove 14 and then flows out through the water outlet pipe 12, so that water body permeated and entering from the asphalt concrete layer 15 is quickly discharged, the erosion of accumulated water on the asphalt concrete layer 15 is avoided, the service life of the asphalt concrete layer 15 is prolonged, the anti-scouring cement layer 3 is used for preventing water body flowing down from the water outlet pipe 12 from impacting a mud layer at the bottom of the road shoulder 4, further preventing the water body from scouring soil at the bottom of the side ditch 6, preventing the mud layer at the bottom of the road shoulder 4 from being scoured by the water body so that the bottom of the road shoulder 4 cannot be supported, the structural design is more reasonable, the lime soil layer 8 has better hydraulicity, and the cement stabilizing crushed stone layer 10 has better water permeability, when water permeates to lime soil layer 8 through cement stabilized rubble layer 10, thereby can form the intensity that the crystallization had increased self in lime soil layer 8 to form wholly with slay layer 7 and cement stabilized rubble layer 10, make whole structure more firm, this is exactly this road bed filling structure's theory of operation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a road bed filling structure, includes road bed base member (1) and rubble soil layer (5), its characterized in that: the roadbed comprises a roadbed base body (1), a geogrid (2) is fixedly connected to the upper portion of the roadbed base body (1), road shoulders (4) are fixedly connected to the left side and the right side of the geogrid (2), anti-scouring cement layers (3) are fixedly connected to the left side and the right side of the road shoulders (4), side ditches (6) are fixedly connected to the left side and the right side of the anti-scouring cement layers (3), a slag layer (7) is fixedly connected to the upper portion of a gravel layer (5), the gravel layer (5) is located above the geogrid (2), a lime soil layer (8) is fixedly connected to the upper portion of the slag layer (7), a heat preservation layer (9) is fixedly connected to the upper portion of the lime soil layer (8), a cement stabilizing gravel layer (10) is fixedly connected to the upper portion of the heat preservation layer (9), a horizontal drainage layer (11) is fixedly connected to the upper portion of the cement stabilizing gravel layer (10, and the top fixedly connected with steel reinforcement enhancement layer (13) of horizontal drainage bed (11), diversion channel (14) have been seted up to the inside of steel reinforcement enhancement layer (13), and the top fixedly connected with asphalt concrete layer (15) of steel reinforcement enhancement layer (13).
2. A road bed filling structure according to claim 1, wherein: the upper surface of the roadbed matrix (1) is tightly attached to the lower surface of the geogrid (2), and the central axis of the roadbed matrix (1) coincides with the central axis of the anti-scouring cement layer (3).
3. A road bed filling structure according to claim 1, wherein: the upper surface of the gravel soil layer (5) is tightly attached to the lower surface of the slag layer (7), and the central axis of the gravel soil layer (5) coincides with the central axis of the slag layer (7).
4. A road bed filling structure according to claim 1, wherein: the side ditches (6) are symmetrical about the central axis of the heat-insulating layer (9), and the lower surface of the cement stabilized gravel layer (10) is tightly attached to the upper surface of the heat-insulating layer (9).
5. A road bed filling structure according to claim 1, wherein: the lower surface of horizontal drainage layer (11) and the upper surface of cement stabilization gravel layer (10) closely laminate, and symmetrical between the axis about horizontal drainage layer (11) between outlet pipe (12).
6. A road bed filling structure according to claim 1, wherein: closely laminate between the lower surface of asphalt concrete layer (15) and the upper surface of steel reinforcement layer (13), and diversion groove (14) are equidistance form and install in the inside of steel reinforcement layer (13).
CN202021890015.7U 2020-09-02 2020-09-02 Road bed filling structure Active CN213232997U (en)

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CN202021890015.7U CN213232997U (en) 2020-09-02 2020-09-02 Road bed filling structure

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Application Number Priority Date Filing Date Title
CN202021890015.7U CN213232997U (en) 2020-09-02 2020-09-02 Road bed filling structure

Publications (1)

Publication Number Publication Date
CN213232997U true CN213232997U (en) 2021-05-18

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CN202021890015.7U Active CN213232997U (en) 2020-09-02 2020-09-02 Road bed filling structure

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